Genuine OEM HP DesignJet T1500 PostScript ePrinter Ink and Supplies
For the DesignJet T1500 PostScript, HP 727 ink and the HP 727 printhead are different purchases. The cartridges hold the ink, while the printhead applies it to paper. A low ink color calls for that cartridge, not a new printhead just because both carry the same family number.
Toner Buzz carries genuine HP 727 individual inks and the B3P06A printhead for this printer. Matte black comes in two sizes for the same cartridge position. Photo black has its own position, so treat the black type and the amount of ink as separate choices.